That's cool! Unfortunately this section of the forum focuses on freshwater fish only; so the best place on this forum to get advice on saltwater fish is in the salt water section further down on this forum on the main page.
Also, as for cycling a saltwater tank; it is completely different than cycling a freshwater tank.
The beneficial bacteria that are found in saltwater tanks live on coral/live rock (LR). So, what you do is, completely setup your saltwater tank with the correct level of salt. Then, you go out and get some coral/LR from your LFS and just add that to your tank. You can also put some in your filter(in smaller amounts of course) along with foam/sponge media. Anyways, the LR will actually "self-cycle" your tank. There are thousands of organisms on the LR which grow and die of really quickly, causing ammonia to enter the tank, then the BB (Beneficial bacteria) on the LR will colonize (rather quickly) to process the ammonia to nitrite then to nitrate (same as freshwater). In about a weeks time your tank will be cycled. Go ahead and add a CUC (Clean up crew(you are going to have to ask what fish these are)) to clean the tank up. Then you will be ready to add your fish, slowly of course, over weeks so that the bacteria can catch up.
If you run a skimmer, you will not have to do as frequent water changes. If you do not run a skimmer, you will have to do weekly water changes.
You also need to get RO (reverse Osmosis) water. This is special water that you mix salt with to put in your tank. You cannot use tap water for a saltwater tank.
You can either have an RO unit installed in your house (which is really expensive) or your LFS should sell RO.
Hope this helps!
-FHM